Brand new, unopened.
http://gaming.logitech.com/en-ca/product/g400s-optical-gaming-mouse
System Requirements
Windows® 8, Windows® 7, or Windows® Vista
USB port
Internet connection for optional software download*
Package Contents
Mouse
User documentation
Durability
Buttons (Left / Right / Third): 20 million clicks
Feet: 250 kilometers
Tracking
Resolution: 200 - 4000 dots per inch (dpi)
Image processing: 5.8 megapixels/second
Max. acceleration**: 25G
Max. speed: up to 70-140 inches (4.06 meters)/second*
Responsiveness
USB report rate: Up to 1000 reports/second
Sleep mode: disabled
Glide
Dynamic coefficient of friction***: .09 µ (k)
Static coefficient of friction***: .14 µ (s)
Total weight: 133 grams
Cord: 15 grams